Patricia Walsh is a world-champion triathlete, award-winning engineer, and author of BLIND AMBITION: How to Envision Your Limitless Potential and Achieve the Success You Want (McGraw-Hill, 2014). Diagnosed with a pediatric brain tumor, Walsh became blind at the age of five. As a teenager she lost what little vision remained due to surgical complications. Walsh has raced in more than a dozen marathons and ultra-marathons and competed in two IRONMAN triathlons. In 2011, she set the world record for blind trathletes, shattering both male and female records by more than 50 minutes.